Damaging foreign species of fish in Lake Biwa turned into pet food
Residents on an island in Lake Biwa, Japan's biggest lake, have developed a pet food made from black bass and other foreign species of fish that have been blamed for damaging the lake's ecosystem.
Up until now, foreign species of fish removed from the lake have mainly been processed into feed for livestock. But due to the rich nutritional value of the fish, the suggestion of using them to create pet food emerged.
Some 400 to 500 tons of foreign species of fish are retrieved from Lake Biwa each year, and most of the catch is ground up to be used as livestock feed. However, Hiyoshi, a company in the Shiga Prefecture city of Omihachiman that analyzes food, suggested that the fish be used as pet food due to the presence of vitamin E and nutrients such as taurine, an essential dietary requirement of cats. Seeing the opportunity to create jobs, a group on Lake Biwa's Okishima Island started developing a product with the company in February.
The pet food is made from black bass and bluegill fish. After the fish meat is minced and dried it is smoked to take away some of the smell. It can be used as dog or cat food, and doesn't use additives, taking pet owners health preferences into consideration.
Foreign species of fish, which can wreak havoc on ecosystems, and pollution have caused the fish population in Lake Biwa to decline. Fifty years ago, the yearly catch was about 10,000 tons, but in recent years the figure has dropped to about 2,000 tons. Fishermen are also aging, with a local fisheries official commenting that among the 360 residents on Okishima Island, there are no fishermen in their 20s or 30s.
However, there is hope that the pet food business could draw some young people back.
"If the business goes well, then it will probably appeal to the young people who have left the island," said Hatsuro Kawai, 73, chairman of the Okishima Island group that is helping to develop the product.
One 200-gram bag of the pet food is expected to cost between 500 and 600 yen.
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